Message type: E = Error
Message class:  CNV_21529 - Wagetype Rename 
Message number: 010
Message text: Both old and new wagetypes are initial
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The SAP error message CNV_21529010 indicates that both the old and new wage types are initial (i.e., they are not defined or are empty) during a conversion process, typically related to the SAP payroll or wage type conversion.
Cause: This error usually occurs in the context of a data migration or conversion process, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. The specific causes can include: Missing Configuration: The wage types that are supposed to be mapped from the old system to the new system are not defined in the configuration. Incorrect Mapping: The mapping between old and new wage types is not set up correctly, leading to both being recognized as initial. Data Issues: There may be issues with the data being migrated, such as missing entries or incorrect references.
Solution: To resolve this error, you can take the following steps: Check Wage Type Configuration: Go to the transaction code PE01 (Wage Type Maintenance) and
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